Multi-Cyclone Dust Collection Unit for Easier Hair Removal

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Solution Overview

Problem

The existing multi-cyclone type dust collection units for vacuum cleaners have insufficient foreign object removal efficiency and are inconvenient to clean, particularly when foreign objects like hairs accumulate, requiring manual removal.

Innovation Solution

A dust collection unit with a cone-shaped filter and a blocking member that adjusts airflow rates and prevents foreign objects from flying, featuring a design that allows easy disassembly and cleaning, and multiple cyclone chambers for enhanced filtration efficiency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a multi-cyclone type dust collection unit is used to improve foreign object removal efficiency, then the cyclone airflow filtration capability is enhanced, but the device complexity increases and cleaning becomes more difficult

Engineering Contradiction:
Improveforeign object removal efficiencyVSAvoiddust collection unit structure
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The dust collection unit is divided into multiple independent cyclone chambers, each capable of filtering foreign objects separately. This segmentation allows the system to maintain high filtration efficiency while enabling easier cleaning by accessing individual chambers without disassembling the entire unit.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The filter assembly is extracted as a separate, removable component from the cyclone chambers. Users can easily remove and clean the filter assembly independently, simplifying maintenance while preserving the multi-cyclone configuration for effective foreign object removal.

Inventive Principle:
Principle #2Taking out (Extraction)

2Reliability

If a porous filter is used to filter foreign objects, then the filtration capability is improved, but the filter clogs easily and requires frequent cleaning

Engineering Contradiction:
Improvefiltration capabilityVSAvoidfilter cleaning convenience
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The porous filter is replaced with a cyclone-based mechanical separation system that uses centrifugal force generated by rotating airflow to separate foreign objects from air. This substitution eliminates the clogging problem inherent in porous filters while maintaining effective filtration capability.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The filtration mechanism changes from passive porous filtration to active cyclone separation by utilizing airflow velocity and centrifugal force parameters. This parameter change allows the system to filter foreign objects without the clogging issues of porous materials.

Inventive Principle:
Principle #35Parameter changes

3Reliability

If foreign objects accumulate in the inner chamber of the dust collection unit, then the filtration capacity is reduced, but manual removal becomes necessary and inconvenient

Engineering Contradiction:
Improvefiltration capacityVSAvoidforeign object removal convenience
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The filter assembly collecting foreign objects is extracted as a removable unit from the cyclone chambers. Users can easily remove the filter assembly and clean accumulated foreign objects without disassembling the entire dust collection unit, maintaining filtration capacity while improving maintenance convenience.

Inventive Principle:
Principle #2Taking out (Extraction)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

Improves foreign object removal efficiency and convenience in cleaning, reducing the need for manual removal of accumulated objects and extending the service life of the vacuum cleaner.

Implementation Method 1

a first filtering chamber filtering foreign objects using a cyclone airflow

Methodology Applied
Scientific EffectCyclone airflow: Cyclone Separation

Implementation Method 2

a filter having a diameter that is reduced as it goes downward in response to airflow rate variation in the first filtering chamber

Methodology Applied
Scientific EffectAirflow rate variation:

Data Source

PatentUS7645309B2Dust collection unit and vacuum cleaner with the same
Publication Date: 2010.01.12 LG ELECTRONICS INC
  • US7645309B2 patent drawing
  • US7645309B2 patent drawing
  • US7645309B2 patent drawing

AI summary

A dust collection unit for a vacuum cleaner includes a first filtering chamber filtering foreign objects using a cyclone airflow, a separation plate defining a top surface of the first filtering chamber, a filter having a diameter that is reduced as it goes downward in response to airflow rate variation in the first filtering chamber, and a blocking member provided under the filter to prevent the foreign objects filtered in the first filtering chamber from flying.